[PATCH v2] Fix building against OpenSSL 3

[Jouke Witteveen]

Smartcart support uses the ENGINE API of OpenSSL, which has been
deprecated as of OpenSSL 3. Rather than migrating the code to the new API
or pretending that we do not support OpenSSL 3, accept that we use
deprecated functionality.
---
The `#pragma GCC diagnostic` alternative proposed by Benjamin Berg would
require a push at the beginning of the file and a pop at the end.
 src/crypto/tls_openssl.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/crypto/tls_openssl.c b/src/crypto/tls_openssl.c
index 5aff0d161..17283f998 100644
--- a/src/crypto/tls_openssl.c
+++ b/src/crypto/tls_openssl.c
@@ -19,14 +19,16 @@
 #endif
 #endif

+#ifndef OPENSSL_NO_ENGINE
+/* OpenSSL 3.0 has moved away from the engine API */
+#define OPENSSL_SUPPRESS_DEPRECATED
+#include <openssl/engine.h>
+#endif /* OPENSSL_NO_ENGINE */
 #include <openssl/ssl.h>
 #include <openssl/err.h>
 #include <openssl/opensslv.h>
 #include <openssl/pkcs12.h>
 #include <openssl/x509v3.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif /* OPENSSL_NO_ENGINE */
 #if OPENSSL_VERSION_NUMBER >= 0x30000000L
 #include <openssl/core_names.h>
 #include <openssl/decoder.h>
-- 
2.43.0